709667 has 8 divisors (see below), whose sum is σ = 828000. Its totient is φ = 607992.

The previous prime is 709663. The next prime is 709673. The reversal of 709667 is 766907.

It is not a de Polignac number, because 709667 - 2² = 709663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (103500).

2⁷⁰⁹⁶⁶⁷ is an apocalyptic number.

709667 is a deficient number, since it is larger than the sum of its proper divisors (118333).

709667 is an equidigital number, since it uses as much as digits as its factorization.

709667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090 (or 2076 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 709667 is about 842.4173549969. The cubic root of 709667 is about 89.1972647582.

The spelling of 709667 in words is "seven hundred nine thousand, six hundred sixty-seven".